In order to ensure that multichannel carrier systems on cable and on radio-relay links shall comply with standards of performance considered as equivalent in respect of noise, the following design objectives should apply to the noise at a zero relative level point in any telephone channel having the same composition as the hypothetical reference circuit on such systems.
ITU-T G.222 SPANISH-1993 Referenced Document
ITU-T F.10 CHARACTER ERROR RATE OBJECTIVE FOR TELEGRAPH COMMUNICATION USING 5 - UNIT START-STOP EQUIPMENT
ITU-T G.222 SPANISH-1993 history
1993ITU-T G.222 SPANISH-1993 NOISE OBJECTIVES FOR DESIGN OF CARRIER-TRANSMISSION SYSTEMS OF 2500 km